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Dome Base

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I haven't used a vibration insulated block on which to mount the scope. This would of needed to be rather large and as I planed to use the scope mostly for imaging in the comfort of a warm room, I felt it to be unnecessary. The footings for the walls are about 12" deep. 1 course of bricks was then laid. The centre was dug out, a couple of inches of sand added, followed by damp proof membrane. Then a 4-inch concrete pad was poured.
Concrete blocks were used for the walls, which need to be very circular (tested my brick laying skills). Others have used fibreglass or wood bases. My feeling is walls are best made of brick (or block). It won't cost much more to do and is a whole lot more stable. The height of the walls is 4 foot. This need to be the same as the height of the telescope when its pointed at the horizon or the scopes view will be obstructed.

 

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Copyright 2006 Steve Chambers. All Rights  Steve@pmdo.com

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